various character handling fixes

c64/kernal/acptr.s

@@ -8,5 +8,10 @@
 ;; CPU registers that has to be preserved (see [RG64]): .Y
 ;;
 
+;; XXX preserve register Y!
+
 acptr:
-	rts
+	;; XXX temporary implementation
+	jsr kernalstatus_reset
+	jmp iec_rx_byte
+

c64/kernal/vector.s

@@ -79,7 +79,7 @@ vector_defaults:
 	.word ckout    ;; ICKOUT
 	.word clrchn   ;; ICLRCH
 	.word chrin    ;; IBASIN
-	.word chrout   ;; IBASOUT
+	.word chrout   ;; IBSOUT
 	.word stop     ;; ISTOP
 	.word getin    ;; IGETIN
 	.word clall    ;; ICLALL